import copy

ll = (9,10)
l1 = (1,2,3,4,5,ll)
l2 = copy.copy(l1)
l3 = copy.deepcopy(l1)
l4 = l1

print(l1,id(l1))  #(1, 2, 3, 4, 5, (9, 10)) 2944349437864
print(l2,id(l2))  # (1, 2, 3, 4, 5, (9, 10)) 2944349437864
print(l3,id(l3))  # (1, 2, 3, 4, 5, (9, 10)) 2944349437864
print(l4,id(l4))  # (1, 2, 3, 4, 5, (9, 10)) 2944349437864

# 不可变对象中包含不可变数据时，都会退化为引用赋值
